melanin precursors.

From:

Christine Lee <c.lee@mailbox.uq.edu.au>

Could the bioochemists amongst us please answer this question.
I have methods specifying L-Dopa for studying melanin precursors and
methods specifying DL-dopa. What is the difference?. We are about to work
on melanin precursors in grey horses.
Thanks for your help.
Christine Lee.
School of Veterinary Science,
University of Queensland